Operation - Extech Instruments 412355A User Manual

Operation

POWER BUTTON and AUTO POWER OFF FEATURE
FUNCTION SLIDE SWITCH
MODE
UNIT BUTTON
ZERO BUTTON
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1. Use the POWER button to turn the unit ON or OFF. When the unit is powered up, a short self-
test will ensue after which the display will stabilize.
2. This meter can either be powered by one 9V battery or an AC adapter.
3. When the battery symbol appears on the LCD display, replace the battery as soon as possible.
Low battery power may cause inaccurate readings and erratic meter operation.
4. This instrument is equipped with Auto Power OFF which turns the meter off after 10 minutes of
inactivity. To override this feature; press and hold the MODE button until the display shows
(auto power off de-activated) or
Slide the Function switch on the side of the meter to the desired function (Voltage or Current)
Press the MODE button to select either SOURCE (output) or MEASURE (input)
Press the UNIT button to select:
1. Voltage mode: mV or V in source.
2. Current mode: mA or % in source or measure
OUTPUT ADJUST BUTTONS
Press the buttons to increase or decrease the output voltage or current value in the source
mode.
1. Press the button once to increase the value in one digit steps.
2. Press and hold the button to increase the value in 10 digit steps.
3. Press and hold the button > 2 sec and then press the
digit steps
4. To decrease the value, use the
The ZERO button manually zeros the display in the MEASURE mode.
1. Set the meter to the MEASURE mode
2. Short the input jack
3. Press and release the ZERO button.
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(auto power off activated).
to increase the value in 100
button as described above.
3
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412355A-EU-EN v3.3 07/13
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